1 /* 2 * Copyright 2002-2005, Instant802 Networks, Inc. 3 * Copyright 2005, Devicescape Software, Inc. 4 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 5 * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2015 Intel Mobile Communications GmbH 7 * Copyright (C) 2018 Intel Corporation 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13 14 #ifndef IEEE80211_I_H 15 #define IEEE80211_I_H 16 17 #include <linux/kernel.h> 18 #include <linux/device.h> 19 #include <linux/if_ether.h> 20 #include <linux/interrupt.h> 21 #include <linux/list.h> 22 #include <linux/netdevice.h> 23 #include <linux/skbuff.h> 24 #include <linux/workqueue.h> 25 #include <linux/types.h> 26 #include <linux/spinlock.h> 27 #include <linux/etherdevice.h> 28 #include <linux/leds.h> 29 #include <linux/idr.h> 30 #include <linux/rhashtable.h> 31 #include <net/ieee80211_radiotap.h> 32 #include <net/cfg80211.h> 33 #include <net/mac80211.h> 34 #include <net/fq.h> 35 #include "key.h" 36 #include "sta_info.h" 37 #include "debug.h" 38 39 extern const struct cfg80211_ops mac80211_config_ops; 40 41 struct ieee80211_local; 42 43 /* Maximum number of broadcast/multicast frames to buffer when some of the 44 * associated stations are using power saving. */ 45 #define AP_MAX_BC_BUFFER 128 46 47 /* Maximum number of frames buffered to all STAs, including multicast frames. 48 * Note: increasing this limit increases the potential memory requirement. Each 49 * frame can be up to about 2 kB long. */ 50 #define TOTAL_MAX_TX_BUFFER 512 51 52 /* Required encryption head and tailroom */ 53 #define IEEE80211_ENCRYPT_HEADROOM 8 54 #define IEEE80211_ENCRYPT_TAILROOM 18 55 56 /* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent 57 * reception of at least three fragmented frames. This limit can be increased 58 * by changing this define, at the cost of slower frame reassembly and 59 * increased memory use (about 2 kB of RAM per entry). */ 60 #define IEEE80211_FRAGMENT_MAX 4 61 62 /* power level hasn't been configured (or set to automatic) */ 63 #define IEEE80211_UNSET_POWER_LEVEL INT_MIN 64 65 /* 66 * Some APs experience problems when working with U-APSD. Decreasing the 67 * probability of that happening by using legacy mode for all ACs but VO isn't 68 * enough. 69 * 70 * Cisco 4410N originally forced us to enable VO by default only because it 71 * treated non-VO ACs as legacy. 72 * 73 * However some APs (notably Netgear R7000) silently reclassify packets to 74 * different ACs. Since u-APSD ACs require trigger frames for frame retrieval 75 * clients would never see some frames (e.g. ARP responses) or would fetch them 76 * accidentally after a long time. 77 * 78 * It makes little sense to enable u-APSD queues by default because it needs 79 * userspace applications to be aware of it to actually take advantage of the 80 * possible additional powersavings. Implicitly depending on driver autotrigger 81 * frame support doesn't make much sense. 82 */ 83 #define IEEE80211_DEFAULT_UAPSD_QUEUES 0 84 85 #define IEEE80211_DEFAULT_MAX_SP_LEN \ 86 IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL 87 88 extern const u8 ieee80211_ac_to_qos_mask[IEEE80211_NUM_ACS]; 89 90 #define IEEE80211_DEAUTH_FRAME_LEN (24 /* hdr */ + 2 /* reason */) 91 92 #define IEEE80211_MAX_NAN_INSTANCE_ID 255 93 94 struct ieee80211_fragment_entry { 95 struct sk_buff_head skb_list; 96 unsigned long first_frag_time; 97 u16 seq; 98 u16 extra_len; 99 u16 last_frag; 100 u8 rx_queue; 101 bool check_sequential_pn; /* needed for CCMP/GCMP */ 102 u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ 103 }; 104 105 106 struct ieee80211_bss { 107 u32 device_ts_beacon, device_ts_presp; 108 109 bool wmm_used; 110 bool uapsd_supported; 111 112 #define IEEE80211_MAX_SUPP_RATES 32 113 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; 114 size_t supp_rates_len; 115 struct ieee80211_rate *beacon_rate; 116 117 /* 118 * During association, we save an ERP value from a probe response so 119 * that we can feed ERP info to the driver when handling the 120 * association completes. these fields probably won't be up-to-date 121 * otherwise, you probably don't want to use them. 122 */ 123 bool has_erp_value; 124 u8 erp_value; 125 126 /* Keep track of the corruption of the last beacon/probe response. */ 127 u8 corrupt_data; 128 129 /* Keep track of what bits of information we have valid info for. */ 130 u8 valid_data; 131 }; 132 133 /** 134 * enum ieee80211_corrupt_data_flags - BSS data corruption flags 135 * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted 136 * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted 137 * 138 * These are bss flags that are attached to a bss in the 139 * @corrupt_data field of &struct ieee80211_bss. 140 */ 141 enum ieee80211_bss_corrupt_data_flags { 142 IEEE80211_BSS_CORRUPT_BEACON = BIT(0), 143 IEEE80211_BSS_CORRUPT_PROBE_RESP = BIT(1) 144 }; 145 146 /** 147 * enum ieee80211_valid_data_flags - BSS valid data flags 148 * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE 149 * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE 150 * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE 151 * 152 * These are bss flags that are attached to a bss in the 153 * @valid_data field of &struct ieee80211_bss. They show which parts 154 * of the data structure were received as a result of an un-corrupted 155 * beacon/probe response. 156 */ 157 enum ieee80211_bss_valid_data_flags { 158 IEEE80211_BSS_VALID_WMM = BIT(1), 159 IEEE80211_BSS_VALID_RATES = BIT(2), 160 IEEE80211_BSS_VALID_ERP = BIT(3) 161 }; 162 163 typedef unsigned __bitwise ieee80211_tx_result; 164 #define TX_CONTINUE ((__force ieee80211_tx_result) 0u) 165 #define TX_DROP ((__force ieee80211_tx_result) 1u) 166 #define TX_QUEUED ((__force ieee80211_tx_result) 2u) 167 168 #define IEEE80211_TX_NO_SEQNO BIT(0) 169 #define IEEE80211_TX_UNICAST BIT(1) 170 #define IEEE80211_TX_PS_BUFFERED BIT(2) 171 172 struct ieee80211_tx_data { 173 struct sk_buff *skb; 174 struct sk_buff_head skbs; 175 struct ieee80211_local *local; 176 struct ieee80211_sub_if_data *sdata; 177 struct sta_info *sta; 178 struct ieee80211_key *key; 179 struct ieee80211_tx_rate rate; 180 181 unsigned int flags; 182 }; 183 184 185 typedef unsigned __bitwise ieee80211_rx_result; 186 #define RX_CONTINUE ((__force ieee80211_rx_result) 0u) 187 #define RX_DROP_UNUSABLE ((__force ieee80211_rx_result) 1u) 188 #define RX_DROP_MONITOR ((__force ieee80211_rx_result) 2u) 189 #define RX_QUEUED ((__force ieee80211_rx_result) 3u) 190 191 /** 192 * enum ieee80211_packet_rx_flags - packet RX flags 193 * @IEEE80211_RX_AMSDU: a-MSDU packet 194 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed 195 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering 196 * 197 * These are per-frame flags that are attached to a frame in the 198 * @rx_flags field of &struct ieee80211_rx_status. 199 */ 200 enum ieee80211_packet_rx_flags { 201 IEEE80211_RX_AMSDU = BIT(3), 202 IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), 203 IEEE80211_RX_DEFERRED_RELEASE = BIT(5), 204 }; 205 206 /** 207 * enum ieee80211_rx_flags - RX data flags 208 * 209 * @IEEE80211_RX_CMNTR: received on cooked monitor already 210 * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported 211 * to cfg80211_report_obss_beacon(). 212 * 213 * These flags are used across handling multiple interfaces 214 * for a single frame. 215 */ 216 enum ieee80211_rx_flags { 217 IEEE80211_RX_CMNTR = BIT(0), 218 IEEE80211_RX_BEACON_REPORTED = BIT(1), 219 }; 220 221 struct ieee80211_rx_data { 222 struct napi_struct *napi; 223 struct sk_buff *skb; 224 struct ieee80211_local *local; 225 struct ieee80211_sub_if_data *sdata; 226 struct sta_info *sta; 227 struct ieee80211_key *key; 228 229 unsigned int flags; 230 231 /* 232 * Index into sequence numbers array, 0..16 233 * since the last (16) is used for non-QoS, 234 * will be 16 on non-QoS frames. 235 */ 236 int seqno_idx; 237 238 /* 239 * Index into the security IV/PN arrays, 0..16 240 * since the last (16) is used for CCMP-encrypted 241 * management frames, will be set to 16 on mgmt 242 * frames and 0 on non-QoS frames. 243 */ 244 int security_idx; 245 246 u32 tkip_iv32; 247 u16 tkip_iv16; 248 }; 249 250 struct ieee80211_csa_settings { 251 const u16 *counter_offsets_beacon; 252 const u16 *counter_offsets_presp; 253 254 int n_counter_offsets_beacon; 255 int n_counter_offsets_presp; 256 257 u8 count; 258 }; 259 260 struct beacon_data { 261 u8 *head, *tail; 262 int head_len, tail_len; 263 struct ieee80211_meshconf_ie *meshconf; 264 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 265 u8 csa_current_counter; 266 struct rcu_head rcu_head; 267 }; 268 269 struct probe_resp { 270 struct rcu_head rcu_head; 271 int len; 272 u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM]; 273 u8 data[0]; 274 }; 275 276 struct ps_data { 277 /* yes, this looks ugly, but guarantees that we can later use 278 * bitmap_empty :) 279 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */ 280 u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)] 281 __aligned(__alignof__(unsigned long)); 282 struct sk_buff_head bc_buf; 283 atomic_t num_sta_ps; /* number of stations in PS mode */ 284 int dtim_count; 285 bool dtim_bc_mc; 286 }; 287 288 struct ieee80211_if_ap { 289 struct beacon_data __rcu *beacon; 290 struct probe_resp __rcu *probe_resp; 291 292 /* to be used after channel switch. */ 293 struct cfg80211_beacon_data *next_beacon; 294 struct list_head vlans; /* write-protected with RTNL and local->mtx */ 295 296 struct ps_data ps; 297 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 298 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 299 driver_smps_mode; /* smps mode request */ 300 301 struct work_struct request_smps_work; 302 bool multicast_to_unicast; 303 }; 304 305 struct ieee80211_if_wds { 306 struct sta_info *sta; 307 u8 remote_addr[ETH_ALEN]; 308 }; 309 310 struct ieee80211_if_vlan { 311 struct list_head list; /* write-protected with RTNL and local->mtx */ 312 313 /* used for all tx if the VLAN is configured to 4-addr mode */ 314 struct sta_info __rcu *sta; 315 atomic_t num_mcast_sta; /* number of stations receiving multicast */ 316 }; 317 318 struct mesh_stats { 319 __u32 fwded_mcast; /* Mesh forwarded multicast frames */ 320 __u32 fwded_unicast; /* Mesh forwarded unicast frames */ 321 __u32 fwded_frames; /* Mesh total forwarded frames */ 322 __u32 dropped_frames_ttl; /* Not transmitted since mesh_ttl == 0*/ 323 __u32 dropped_frames_no_route; /* Not transmitted, no route found */ 324 __u32 dropped_frames_congestion;/* Not forwarded due to congestion */ 325 }; 326 327 #define PREQ_Q_F_START 0x1 328 #define PREQ_Q_F_REFRESH 0x2 329 struct mesh_preq_queue { 330 struct list_head list; 331 u8 dst[ETH_ALEN]; 332 u8 flags; 333 }; 334 335 struct ieee80211_roc_work { 336 struct list_head list; 337 338 struct ieee80211_sub_if_data *sdata; 339 340 struct ieee80211_channel *chan; 341 342 bool started, abort, hw_begun, notified; 343 bool on_channel; 344 345 unsigned long start_time; 346 347 u32 duration, req_duration; 348 struct sk_buff *frame; 349 u64 cookie, mgmt_tx_cookie; 350 enum ieee80211_roc_type type; 351 }; 352 353 /* flags used in struct ieee80211_if_managed.flags */ 354 enum ieee80211_sta_flags { 355 IEEE80211_STA_CONNECTION_POLL = BIT(1), 356 IEEE80211_STA_CONTROL_PORT = BIT(2), 357 IEEE80211_STA_DISABLE_HT = BIT(4), 358 IEEE80211_STA_MFP_ENABLED = BIT(6), 359 IEEE80211_STA_UAPSD_ENABLED = BIT(7), 360 IEEE80211_STA_NULLFUNC_ACKED = BIT(8), 361 IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9), 362 IEEE80211_STA_DISABLE_40MHZ = BIT(10), 363 IEEE80211_STA_DISABLE_VHT = BIT(11), 364 IEEE80211_STA_DISABLE_80P80MHZ = BIT(12), 365 IEEE80211_STA_DISABLE_160MHZ = BIT(13), 366 IEEE80211_STA_DISABLE_WMM = BIT(14), 367 IEEE80211_STA_ENABLE_RRM = BIT(15), 368 IEEE80211_STA_DISABLE_HE = BIT(16), 369 }; 370 371 struct ieee80211_mgd_auth_data { 372 struct cfg80211_bss *bss; 373 unsigned long timeout; 374 int tries; 375 u16 algorithm, expected_transaction; 376 377 u8 key[WLAN_KEY_LEN_WEP104]; 378 u8 key_len, key_idx; 379 bool done; 380 bool timeout_started; 381 382 u16 sae_trans, sae_status; 383 size_t data_len; 384 u8 data[]; 385 }; 386 387 struct ieee80211_mgd_assoc_data { 388 struct cfg80211_bss *bss; 389 const u8 *supp_rates; 390 391 unsigned long timeout; 392 int tries; 393 394 u16 capability; 395 u8 prev_bssid[ETH_ALEN]; 396 u8 ssid[IEEE80211_MAX_SSID_LEN]; 397 u8 ssid_len; 398 u8 supp_rates_len; 399 bool wmm, uapsd; 400 bool need_beacon; 401 bool synced; 402 bool timeout_started; 403 404 u8 ap_ht_param; 405 406 struct ieee80211_vht_cap ap_vht_cap; 407 408 u8 fils_nonces[2 * FILS_NONCE_LEN]; 409 u8 fils_kek[FILS_MAX_KEK_LEN]; 410 size_t fils_kek_len; 411 412 size_t ie_len; 413 u8 ie[]; 414 }; 415 416 struct ieee80211_sta_tx_tspec { 417 /* timestamp of the first packet in the time slice */ 418 unsigned long time_slice_start; 419 420 u32 admitted_time; /* in usecs, unlike over the air */ 421 u8 tsid; 422 s8 up; /* signed to be able to invalidate with -1 during teardown */ 423 424 /* consumed TX time in microseconds in the time slice */ 425 u32 consumed_tx_time; 426 enum { 427 TX_TSPEC_ACTION_NONE = 0, 428 TX_TSPEC_ACTION_DOWNGRADE, 429 TX_TSPEC_ACTION_STOP_DOWNGRADE, 430 } action; 431 bool downgraded; 432 }; 433 434 DECLARE_EWMA(beacon_signal, 4, 4) 435 436 struct ieee80211_if_managed { 437 struct timer_list timer; 438 struct timer_list conn_mon_timer; 439 struct timer_list bcn_mon_timer; 440 struct timer_list chswitch_timer; 441 struct work_struct monitor_work; 442 struct work_struct chswitch_work; 443 struct work_struct beacon_connection_loss_work; 444 struct work_struct csa_connection_drop_work; 445 446 unsigned long beacon_timeout; 447 unsigned long probe_timeout; 448 int probe_send_count; 449 bool nullfunc_failed; 450 bool connection_loss; 451 452 struct cfg80211_bss *associated; 453 struct ieee80211_mgd_auth_data *auth_data; 454 struct ieee80211_mgd_assoc_data *assoc_data; 455 456 u8 bssid[ETH_ALEN] __aligned(2); 457 458 u16 aid; 459 460 bool powersave; /* powersave requested for this iface */ 461 bool broken_ap; /* AP is broken -- turn off powersave */ 462 bool have_beacon; 463 u8 dtim_period; 464 enum ieee80211_smps_mode req_smps, /* requested smps mode */ 465 driver_smps_mode; /* smps mode request */ 466 467 struct work_struct request_smps_work; 468 469 unsigned int flags; 470 471 bool csa_waiting_bcn; 472 bool csa_ignored_same_chan; 473 474 bool beacon_crc_valid; 475 u32 beacon_crc; 476 477 bool status_acked; 478 bool status_received; 479 __le16 status_fc; 480 481 enum { 482 IEEE80211_MFP_DISABLED, 483 IEEE80211_MFP_OPTIONAL, 484 IEEE80211_MFP_REQUIRED 485 } mfp; /* management frame protection */ 486 487 /* 488 * Bitmask of enabled u-apsd queues, 489 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association 490 * to take effect. 491 */ 492 unsigned int uapsd_queues; 493 494 /* 495 * Maximum number of buffered frames AP can deliver during a 496 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar. 497 * Needs a new association to take effect. 498 */ 499 unsigned int uapsd_max_sp_len; 500 501 int wmm_last_param_set; 502 503 u8 use_4addr; 504 505 s16 p2p_noa_index; 506 507 struct ewma_beacon_signal ave_beacon_signal; 508 509 /* 510 * Number of Beacon frames used in ave_beacon_signal. This can be used 511 * to avoid generating less reliable cqm events that would be based 512 * only on couple of received frames. 513 */ 514 unsigned int count_beacon_signal; 515 516 /* Number of times beacon loss was invoked. */ 517 unsigned int beacon_loss_count; 518 519 /* 520 * Last Beacon frame signal strength average (ave_beacon_signal / 16) 521 * that triggered a cqm event. 0 indicates that no event has been 522 * generated for the current association. 523 */ 524 int last_cqm_event_signal; 525 526 /* 527 * State variables for keeping track of RSSI of the AP currently 528 * connected to and informing driver when RSSI has gone 529 * below/above a certain threshold. 530 */ 531 int rssi_min_thold, rssi_max_thold; 532 int last_ave_beacon_signal; 533 534 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 535 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 536 struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */ 537 struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */ 538 539 /* TDLS support */ 540 u8 tdls_peer[ETH_ALEN] __aligned(2); 541 struct delayed_work tdls_peer_del_work; 542 struct sk_buff *orig_teardown_skb; /* The original teardown skb */ 543 struct sk_buff *teardown_skb; /* A copy to send through the AP */ 544 spinlock_t teardown_lock; /* To lock changing teardown_skb */ 545 bool tdls_chan_switch_prohibited; 546 bool tdls_wider_bw_prohibited; 547 548 /* WMM-AC TSPEC support */ 549 struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS]; 550 /* Use a separate work struct so that we can do something here 551 * while the sdata->work is flushing the queues, for example. 552 * otherwise, in scenarios where we hardly get any traffic out 553 * on the BE queue, but there's a lot of VO traffic, we might 554 * get stuck in a downgraded situation and flush takes forever. 555 */ 556 struct delayed_work tx_tspec_wk; 557 }; 558 559 struct ieee80211_if_ibss { 560 struct timer_list timer; 561 struct work_struct csa_connection_drop_work; 562 563 unsigned long last_scan_completed; 564 565 u32 basic_rates; 566 567 bool fixed_bssid; 568 bool fixed_channel; 569 bool privacy; 570 571 bool control_port; 572 bool userspace_handles_dfs; 573 574 u8 bssid[ETH_ALEN] __aligned(2); 575 u8 ssid[IEEE80211_MAX_SSID_LEN]; 576 u8 ssid_len, ie_len; 577 u8 *ie; 578 struct cfg80211_chan_def chandef; 579 580 unsigned long ibss_join_req; 581 /* probe response/beacon for IBSS */ 582 struct beacon_data __rcu *presp; 583 584 struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */ 585 struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */ 586 587 spinlock_t incomplete_lock; 588 struct list_head incomplete_stations; 589 590 enum { 591 IEEE80211_IBSS_MLME_SEARCH, 592 IEEE80211_IBSS_MLME_JOINED, 593 } state; 594 }; 595 596 /** 597 * struct ieee80211_if_ocb - OCB mode state 598 * 599 * @housekeeping_timer: timer for periodic invocation of a housekeeping task 600 * @wrkq_flags: OCB deferred task action 601 * @incomplete_lock: delayed STA insertion lock 602 * @incomplete_stations: list of STAs waiting for delayed insertion 603 * @joined: indication if the interface is connected to an OCB network 604 */ 605 struct ieee80211_if_ocb { 606 struct timer_list housekeeping_timer; 607 unsigned long wrkq_flags; 608 609 spinlock_t incomplete_lock; 610 struct list_head incomplete_stations; 611 612 bool joined; 613 }; 614 615 /** 616 * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface 617 * 618 * these declarations define the interface, which enables 619 * vendor-specific mesh synchronization 620 * 621 */ 622 struct ieee802_11_elems; 623 struct ieee80211_mesh_sync_ops { 624 void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata, 625 u16 stype, 626 struct ieee80211_mgmt *mgmt, 627 struct ieee802_11_elems *elems, 628 struct ieee80211_rx_status *rx_status); 629 630 /* should be called with beacon_data under RCU read lock */ 631 void (*adjust_tsf)(struct ieee80211_sub_if_data *sdata, 632 struct beacon_data *beacon); 633 /* add other framework functions here */ 634 }; 635 636 struct mesh_csa_settings { 637 struct rcu_head rcu_head; 638 struct cfg80211_csa_settings settings; 639 }; 640 641 struct ieee80211_if_mesh { 642 struct timer_list housekeeping_timer; 643 struct timer_list mesh_path_timer; 644 struct timer_list mesh_path_root_timer; 645 646 unsigned long wrkq_flags; 647 unsigned long mbss_changed; 648 649 bool userspace_handles_dfs; 650 651 u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN]; 652 size_t mesh_id_len; 653 /* Active Path Selection Protocol Identifier */ 654 u8 mesh_pp_id; 655 /* Active Path Selection Metric Identifier */ 656 u8 mesh_pm_id; 657 /* Congestion Control Mode Identifier */ 658 u8 mesh_cc_id; 659 /* Synchronization Protocol Identifier */ 660 u8 mesh_sp_id; 661 /* Authentication Protocol Identifier */ 662 u8 mesh_auth_id; 663 /* Local mesh Sequence Number */ 664 u32 sn; 665 /* Last used PREQ ID */ 666 u32 preq_id; 667 atomic_t mpaths; 668 /* Timestamp of last SN update */ 669 unsigned long last_sn_update; 670 /* Time when it's ok to send next PERR */ 671 unsigned long next_perr; 672 /* Timestamp of last PREQ sent */ 673 unsigned long last_preq; 674 struct mesh_rmc *rmc; 675 spinlock_t mesh_preq_queue_lock; 676 struct mesh_preq_queue preq_queue; 677 int preq_queue_len; 678 struct mesh_stats mshstats; 679 struct mesh_config mshcfg; 680 atomic_t estab_plinks; 681 u32 mesh_seqnum; 682 bool accepting_plinks; 683 int num_gates; 684 struct beacon_data __rcu *beacon; 685 const u8 *ie; 686 u8 ie_len; 687 enum { 688 IEEE80211_MESH_SEC_NONE = 0x0, 689 IEEE80211_MESH_SEC_AUTHED = 0x1, 690 IEEE80211_MESH_SEC_SECURED = 0x2, 691 } security; 692 bool user_mpm; 693 /* Extensible Synchronization Framework */ 694 const struct ieee80211_mesh_sync_ops *sync_ops; 695 s64 sync_offset_clockdrift_max; 696 spinlock_t sync_offset_lock; 697 /* mesh power save */ 698 enum nl80211_mesh_power_mode nonpeer_pm; 699 int ps_peers_light_sleep; 700 int ps_peers_deep_sleep; 701 struct ps_data ps; 702 /* Channel Switching Support */ 703 struct mesh_csa_settings __rcu *csa; 704 enum { 705 IEEE80211_MESH_CSA_ROLE_NONE, 706 IEEE80211_MESH_CSA_ROLE_INIT, 707 IEEE80211_MESH_CSA_ROLE_REPEATER, 708 } csa_role; 709 u8 chsw_ttl; 710 u16 pre_value; 711 712 /* offset from skb->data while building IE */ 713 int meshconf_offset; 714 715 struct mesh_table *mesh_paths; 716 struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */ 717 int mesh_paths_generation; 718 int mpp_paths_generation; 719 }; 720 721 #ifdef CONFIG_MAC80211_MESH 722 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 723 do { (msh)->mshstats.name++; } while (0) 724 #else 725 #define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \ 726 do { } while (0) 727 #endif 728 729 /** 730 * enum ieee80211_sub_if_data_flags - virtual interface flags 731 * 732 * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets 733 * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode 734 * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between 735 * associated stations and deliver multicast frames both 736 * back to wireless media and to the local net stack. 737 * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume. 738 * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver 739 */ 740 enum ieee80211_sub_if_data_flags { 741 IEEE80211_SDATA_ALLMULTI = BIT(0), 742 IEEE80211_SDATA_OPERATING_GMODE = BIT(2), 743 IEEE80211_SDATA_DONT_BRIDGE_PACKETS = BIT(3), 744 IEEE80211_SDATA_DISCONNECT_RESUME = BIT(4), 745 IEEE80211_SDATA_IN_DRIVER = BIT(5), 746 }; 747 748 /** 749 * enum ieee80211_sdata_state_bits - virtual interface state bits 750 * @SDATA_STATE_RUNNING: virtual interface is up & running; this 751 * mirrors netif_running() but is separate for interface type 752 * change handling while the interface is up 753 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel 754 * mode, so queues are stopped 755 * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due 756 * to offchannel, reset when offchannel returns 757 */ 758 enum ieee80211_sdata_state_bits { 759 SDATA_STATE_RUNNING, 760 SDATA_STATE_OFFCHANNEL, 761 SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, 762 }; 763 764 /** 765 * enum ieee80211_chanctx_mode - channel context configuration mode 766 * 767 * @IEEE80211_CHANCTX_SHARED: channel context may be used by 768 * multiple interfaces 769 * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used 770 * only by a single interface. This can be used for example for 771 * non-fixed channel IBSS. 772 */ 773 enum ieee80211_chanctx_mode { 774 IEEE80211_CHANCTX_SHARED, 775 IEEE80211_CHANCTX_EXCLUSIVE 776 }; 777 778 /** 779 * enum ieee80211_chanctx_replace_state - channel context replacement state 780 * 781 * This is used for channel context in-place reservations that require channel 782 * context switch/swap. 783 * 784 * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place 785 * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced 786 * by a (not yet registered) channel context pointed by %replace_ctx. 787 * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context 788 * replaces an existing channel context pointed to by %replace_ctx. 789 */ 790 enum ieee80211_chanctx_replace_state { 791 IEEE80211_CHANCTX_REPLACE_NONE, 792 IEEE80211_CHANCTX_WILL_BE_REPLACED, 793 IEEE80211_CHANCTX_REPLACES_OTHER, 794 }; 795 796 struct ieee80211_chanctx { 797 struct list_head list; 798 struct rcu_head rcu_head; 799 800 struct list_head assigned_vifs; 801 struct list_head reserved_vifs; 802 803 enum ieee80211_chanctx_replace_state replace_state; 804 struct ieee80211_chanctx *replace_ctx; 805 806 enum ieee80211_chanctx_mode mode; 807 bool driver_present; 808 809 struct ieee80211_chanctx_conf conf; 810 }; 811 812 struct mac80211_qos_map { 813 struct cfg80211_qos_map qos_map; 814 struct rcu_head rcu_head; 815 }; 816 817 enum txq_info_flags { 818 IEEE80211_TXQ_STOP, 819 IEEE80211_TXQ_AMPDU, 820 IEEE80211_TXQ_NO_AMSDU, 821 IEEE80211_TXQ_STOP_NETIF_TX, 822 }; 823 824 /** 825 * struct txq_info - per tid queue 826 * 827 * @tin: contains packets split into multiple flows 828 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to 829 * a fq_flow which is already owned by a different tin 830 * @def_cvars: codel vars for @def_flow 831 * @frags: used to keep fragments created after dequeue 832 */ 833 struct txq_info { 834 struct fq_tin tin; 835 struct fq_flow def_flow; 836 struct codel_vars def_cvars; 837 struct codel_stats cstats; 838 struct sk_buff_head frags; 839 unsigned long flags; 840 841 /* keep last! */ 842 struct ieee80211_txq txq; 843 }; 844 845 struct ieee80211_if_mntr { 846 u32 flags; 847 u8 mu_follow_addr[ETH_ALEN] __aligned(2); 848 849 struct list_head list; 850 }; 851 852 /** 853 * struct ieee80211_if_nan - NAN state 854 * 855 * @conf: current NAN configuration 856 * @func_ids: a bitmap of available instance_id's 857 */ 858 struct ieee80211_if_nan { 859 struct cfg80211_nan_conf conf; 860 861 /* protects function_inst_ids */ 862 spinlock_t func_lock; 863 struct idr function_inst_ids; 864 }; 865 866 struct ieee80211_sub_if_data { 867 struct list_head list; 868 869 struct wireless_dev wdev; 870 871 /* keys */ 872 struct list_head key_list; 873 874 /* count for keys needing tailroom space allocation */ 875 int crypto_tx_tailroom_needed_cnt; 876 int crypto_tx_tailroom_pending_dec; 877 struct delayed_work dec_tailroom_needed_wk; 878 879 struct net_device *dev; 880 struct ieee80211_local *local; 881 882 unsigned int flags; 883 884 unsigned long state; 885 886 char name[IFNAMSIZ]; 887 888 /* Fragment table for host-based reassembly */ 889 struct ieee80211_fragment_entry fragments[IEEE80211_FRAGMENT_MAX]; 890 unsigned int fragment_next; 891 892 /* TID bitmap for NoAck policy */ 893 u16 noack_map; 894 895 /* bit field of ACM bits (BIT(802.1D tag)) */ 896 u8 wmm_acm; 897 898 struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS]; 899 struct ieee80211_key __rcu *default_unicast_key; 900 struct ieee80211_key __rcu *default_multicast_key; 901 struct ieee80211_key __rcu *default_mgmt_key; 902 903 u16 sequence_number; 904 __be16 control_port_protocol; 905 bool control_port_no_encrypt; 906 bool control_port_over_nl80211; 907 int encrypt_headroom; 908 909 atomic_t num_tx_queued; 910 struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; 911 struct mac80211_qos_map __rcu *qos_map; 912 913 struct work_struct csa_finalize_work; 914 bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */ 915 struct cfg80211_chan_def csa_chandef; 916 917 struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */ 918 struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */ 919 920 /* context reservation -- protected with chanctx_mtx */ 921 struct ieee80211_chanctx *reserved_chanctx; 922 struct cfg80211_chan_def reserved_chandef; 923 bool reserved_radar_required; 924 bool reserved_ready; 925 926 /* used to reconfigure hardware SM PS */ 927 struct work_struct recalc_smps; 928 929 struct work_struct work; 930 struct sk_buff_head skb_queue; 931 932 u8 needed_rx_chains; 933 enum ieee80211_smps_mode smps_mode; 934 935 int user_power_level; /* in dBm */ 936 int ap_power_level; /* in dBm */ 937 938 bool radar_required; 939 struct delayed_work dfs_cac_timer_work; 940 941 /* 942 * AP this belongs to: self in AP mode and 943 * corresponding AP in VLAN mode, NULL for 944 * all others (might be needed later in IBSS) 945 */ 946 struct ieee80211_if_ap *bss; 947 948 /* bitmap of allowed (non-MCS) rate indexes for rate control */ 949 u32 rc_rateidx_mask[NUM_NL80211_BANDS]; 950 951 bool rc_has_mcs_mask[NUM_NL80211_BANDS]; 952 u8 rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN]; 953 954 bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS]; 955 u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX]; 956 957 union { 958 struct ieee80211_if_ap ap; 959 struct ieee80211_if_wds wds; 960 struct ieee80211_if_vlan vlan; 961 struct ieee80211_if_managed mgd; 962 struct ieee80211_if_ibss ibss; 963 struct ieee80211_if_mesh mesh; 964 struct ieee80211_if_ocb ocb; 965 struct ieee80211_if_mntr mntr; 966 struct ieee80211_if_nan nan; 967 } u; 968 969 #ifdef CONFIG_MAC80211_DEBUGFS 970 struct { 971 struct dentry *subdir_stations; 972 struct dentry *default_unicast_key; 973 struct dentry *default_multicast_key; 974 struct dentry *default_mgmt_key; 975 } debugfs; 976 #endif 977 978 /* must be last, dynamically sized area in this! */ 979 struct ieee80211_vif vif; 980 }; 981 982 static inline 983 struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p) 984 { 985 return container_of(p, struct ieee80211_sub_if_data, vif); 986 } 987 988 static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) 989 __acquires(&sdata->wdev.mtx) 990 { 991 mutex_lock(&sdata->wdev.mtx); 992 __acquire(&sdata->wdev.mtx); 993 } 994 995 static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) 996 __releases(&sdata->wdev.mtx) 997 { 998 mutex_unlock(&sdata->wdev.mtx); 999 __release(&sdata->wdev.mtx); 1000 } 1001 1002 #define sdata_dereference(p, sdata) \ 1003 rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx)) 1004 1005 static inline void 1006 sdata_assert_lock(struct ieee80211_sub_if_data *sdata) 1007 { 1008 lockdep_assert_held(&sdata->wdev.mtx); 1009 } 1010 1011 static inline int 1012 ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef) 1013 { 1014 switch (chandef->width) { 1015 case NL80211_CHAN_WIDTH_5: 1016 return 2; 1017 case NL80211_CHAN_WIDTH_10: 1018 return 1; 1019 default: 1020 return 0; 1021 } 1022 } 1023 1024 static inline int 1025 ieee80211_vif_get_shift(struct ieee80211_vif *vif) 1026 { 1027 struct ieee80211_chanctx_conf *chanctx_conf; 1028 int shift = 0; 1029 1030 rcu_read_lock(); 1031 chanctx_conf = rcu_dereference(vif->chanctx_conf); 1032 if (chanctx_conf) 1033 shift = ieee80211_chandef_get_shift(&chanctx_conf->def); 1034 rcu_read_unlock(); 1035 1036 return shift; 1037 } 1038 1039 enum { 1040 IEEE80211_RX_MSG = 1, 1041 IEEE80211_TX_STATUS_MSG = 2, 1042 }; 1043 1044 enum queue_stop_reason { 1045 IEEE80211_QUEUE_STOP_REASON_DRIVER, 1046 IEEE80211_QUEUE_STOP_REASON_PS, 1047 IEEE80211_QUEUE_STOP_REASON_CSA, 1048 IEEE80211_QUEUE_STOP_REASON_AGGREGATION, 1049 IEEE80211_QUEUE_STOP_REASON_SUSPEND, 1050 IEEE80211_QUEUE_STOP_REASON_SKB_ADD, 1051 IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL, 1052 IEEE80211_QUEUE_STOP_REASON_FLUSH, 1053 IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN, 1054 IEEE80211_QUEUE_STOP_REASON_RESERVE_TID, 1055 1056 IEEE80211_QUEUE_STOP_REASONS, 1057 }; 1058 1059 #ifdef CONFIG_MAC80211_LEDS 1060 struct tpt_led_trigger { 1061 char name[32]; 1062 const struct ieee80211_tpt_blink *blink_table; 1063 unsigned int blink_table_len; 1064 struct timer_list timer; 1065 struct ieee80211_local *local; 1066 unsigned long prev_traffic; 1067 unsigned long tx_bytes, rx_bytes; 1068 unsigned int active, want; 1069 bool running; 1070 }; 1071 #endif 1072 1073 /** 1074 * mac80211 scan flags - currently active scan mode 1075 * 1076 * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as 1077 * well be on the operating channel 1078 * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to 1079 * determine if we are on the operating channel or not 1080 * @SCAN_ONCHANNEL_SCANNING: Do a software scan on only the current operating 1081 * channel. This should not interrupt normal traffic. 1082 * @SCAN_COMPLETED: Set for our scan work function when the driver reported 1083 * that the scan completed. 1084 * @SCAN_ABORTED: Set for our scan work function when the driver reported 1085 * a scan complete for an aborted scan. 1086 * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being 1087 * cancelled. 1088 */ 1089 enum { 1090 SCAN_SW_SCANNING, 1091 SCAN_HW_SCANNING, 1092 SCAN_ONCHANNEL_SCANNING, 1093 SCAN_COMPLETED, 1094 SCAN_ABORTED, 1095 SCAN_HW_CANCELLED, 1096 }; 1097 1098 /** 1099 * enum mac80211_scan_state - scan state machine states 1100 * 1101 * @SCAN_DECISION: Main entry point to the scan state machine, this state 1102 * determines if we should keep on scanning or switch back to the 1103 * operating channel 1104 * @SCAN_SET_CHANNEL: Set the next channel to be scanned 1105 * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses 1106 * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to 1107 * send out data 1108 * @SCAN_RESUME: Resume the scan and scan the next channel 1109 * @SCAN_ABORT: Abort the scan and go back to operating channel 1110 */ 1111 enum mac80211_scan_state { 1112 SCAN_DECISION, 1113 SCAN_SET_CHANNEL, 1114 SCAN_SEND_PROBE, 1115 SCAN_SUSPEND, 1116 SCAN_RESUME, 1117 SCAN_ABORT, 1118 }; 1119 1120 struct ieee80211_local { 1121 /* embed the driver visible part. 1122 * don't cast (use the static inlines below), but we keep 1123 * it first anyway so they become a no-op */ 1124 struct ieee80211_hw hw; 1125 1126 struct fq fq; 1127 struct codel_vars *cvars; 1128 struct codel_params cparams; 1129 1130 const struct ieee80211_ops *ops; 1131 1132 /* 1133 * private workqueue to mac80211. mac80211 makes this accessible 1134 * via ieee80211_queue_work() 1135 */ 1136 struct workqueue_struct *workqueue; 1137 1138 unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES]; 1139 int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS]; 1140 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */ 1141 spinlock_t queue_stop_reason_lock; 1142 1143 int open_count; 1144 int monitors, cooked_mntrs; 1145 /* number of interfaces with corresponding FIF_ flags */ 1146 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll, 1147 fif_probe_req; 1148 int probe_req_reg; 1149 unsigned int filter_flags; /* FIF_* */ 1150 1151 bool wiphy_ciphers_allocated; 1152 1153 bool use_chanctx; 1154 1155 /* protects the aggregated multicast list and filter calls */ 1156 spinlock_t filter_lock; 1157 1158 /* used for uploading changed mc list */ 1159 struct work_struct reconfig_filter; 1160 1161 /* aggregated multicast list */ 1162 struct netdev_hw_addr_list mc_list; 1163 1164 bool tim_in_locked_section; /* see ieee80211_beacon_get() */ 1165 1166 /* 1167 * suspended is true if we finished all the suspend _and_ we have 1168 * not yet come up from resume. This is to be used by mac80211 1169 * to ensure driver sanity during suspend and mac80211's own 1170 * sanity. It can eventually be used for WoW as well. 1171 */ 1172 bool suspended; 1173 1174 /* 1175 * Resuming is true while suspended, but when we're reprogramming the 1176 * hardware -- at that time it's allowed to use ieee80211_queue_work() 1177 * again even though some other parts of the stack are still suspended 1178 * and we still drop received frames to avoid waking the stack. 1179 */ 1180 bool resuming; 1181 1182 /* 1183 * quiescing is true during the suspend process _only_ to 1184 * ease timer cancelling etc. 1185 */ 1186 bool quiescing; 1187 1188 /* device is started */ 1189 bool started; 1190 1191 /* device is during a HW reconfig */ 1192 bool in_reconfig; 1193 1194 /* wowlan is enabled -- don't reconfig on resume */ 1195 bool wowlan; 1196 1197 struct work_struct radar_detected_work; 1198 1199 /* number of RX chains the hardware has */ 1200 u8 rx_chains; 1201 1202 /* bitmap of which sbands were copied */ 1203 u8 sband_allocated; 1204 1205 int tx_headroom; /* required headroom for hardware/radiotap */ 1206 1207 /* Tasklet and skb queue to process calls from IRQ mode. All frames 1208 * added to skb_queue will be processed, but frames in 1209 * skb_queue_unreliable may be dropped if the total length of these 1210 * queues increases over the limit. */ 1211 #define IEEE80211_IRQSAFE_QUEUE_LIMIT 128 1212 struct tasklet_struct tasklet; 1213 struct sk_buff_head skb_queue; 1214 struct sk_buff_head skb_queue_unreliable; 1215 1216 spinlock_t rx_path_lock; 1217 1218 /* Station data */ 1219 /* 1220 * The mutex only protects the list, hash table and 1221 * counter, reads are done with RCU. 1222 */ 1223 struct mutex sta_mtx; 1224 spinlock_t tim_lock; 1225 unsigned long num_sta; 1226 struct list_head sta_list; 1227 struct rhltable sta_hash; 1228 struct timer_list sta_cleanup; 1229 int sta_generation; 1230 1231 struct sk_buff_head pending[IEEE80211_MAX_QUEUES]; 1232 struct tasklet_struct tx_pending_tasklet; 1233 struct tasklet_struct wake_txqs_tasklet; 1234 1235 atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES]; 1236 1237 /* number of interfaces with allmulti RX */ 1238 atomic_t iff_allmultis; 1239 1240 struct rate_control_ref *rate_ctrl; 1241 1242 struct crypto_cipher *wep_tx_tfm; 1243 struct crypto_cipher *wep_rx_tfm; 1244 u32 wep_iv; 1245 1246 /* see iface.c */ 1247 struct list_head interfaces; 1248 struct list_head mon_list; /* only that are IFF_UP && !cooked */ 1249 struct mutex iflist_mtx; 1250 1251 /* 1252 * Key mutex, protects sdata's key_list and sta_info's 1253 * key pointers (write access, they're RCU.) 1254 */ 1255 struct mutex key_mtx; 1256 1257 /* mutex for scan and work locking */ 1258 struct mutex mtx; 1259 1260 /* Scanning and BSS list */ 1261 unsigned long scanning; 1262 struct cfg80211_ssid scan_ssid; 1263 struct cfg80211_scan_request *int_scan_req; 1264 struct cfg80211_scan_request __rcu *scan_req; 1265 struct ieee80211_scan_request *hw_scan_req; 1266 struct cfg80211_chan_def scan_chandef; 1267 enum nl80211_band hw_scan_band; 1268 int scan_channel_idx; 1269 int scan_ies_len; 1270 int hw_scan_ies_bufsize; 1271 struct cfg80211_scan_info scan_info; 1272 1273 struct work_struct sched_scan_stopped_work; 1274 struct ieee80211_sub_if_data __rcu *sched_scan_sdata; 1275 struct cfg80211_sched_scan_request __rcu *sched_scan_req; 1276 u8 scan_addr[ETH_ALEN]; 1277 1278 unsigned long leave_oper_channel_time; 1279 enum mac80211_scan_state next_scan_state; 1280 struct delayed_work scan_work; 1281 struct ieee80211_sub_if_data __rcu *scan_sdata; 1282 /* For backward compatibility only -- do not use */ 1283 struct cfg80211_chan_def _oper_chandef; 1284 1285 /* Temporary remain-on-channel for off-channel operations */ 1286 struct ieee80211_channel *tmp_channel; 1287 1288 /* channel contexts */ 1289 struct list_head chanctx_list; 1290 struct mutex chanctx_mtx; 1291 1292 #ifdef CONFIG_MAC80211_LEDS 1293 struct led_trigger tx_led, rx_led, assoc_led, radio_led; 1294 struct led_trigger tpt_led; 1295 atomic_t tx_led_active, rx_led_active, assoc_led_active; 1296 atomic_t radio_led_active, tpt_led_active; 1297 struct tpt_led_trigger *tpt_led_trigger; 1298 #endif 1299 1300 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 1301 /* SNMP counters */ 1302 /* dot11CountersTable */ 1303 u32 dot11TransmittedFragmentCount; 1304 u32 dot11MulticastTransmittedFrameCount; 1305 u32 dot11FailedCount; 1306 u32 dot11RetryCount; 1307 u32 dot11MultipleRetryCount; 1308 u32 dot11FrameDuplicateCount; 1309 u32 dot11ReceivedFragmentCount; 1310 u32 dot11MulticastReceivedFrameCount; 1311 u32 dot11TransmittedFrameCount; 1312 1313 /* TX/RX handler statistics */ 1314 unsigned int tx_handlers_drop; 1315 unsigned int tx_handlers_queued; 1316 unsigned int tx_handlers_drop_wep; 1317 unsigned int tx_handlers_drop_not_assoc; 1318 unsigned int tx_handlers_drop_unauth_port; 1319 unsigned int rx_handlers_drop; 1320 unsigned int rx_handlers_queued; 1321 unsigned int rx_handlers_drop_nullfunc; 1322 unsigned int rx_handlers_drop_defrag; 1323 unsigned int tx_expand_skb_head; 1324 unsigned int tx_expand_skb_head_cloned; 1325 unsigned int rx_expand_skb_head_defrag; 1326 unsigned int rx_handlers_fragments; 1327 unsigned int tx_status_drop; 1328 #define I802_DEBUG_INC(c) (c)++ 1329 #else /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1330 #define I802_DEBUG_INC(c) do { } while (0) 1331 #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ 1332 1333 1334 int total_ps_buffered; /* total number of all buffered unicast and 1335 * multicast packets for power saving stations 1336 */ 1337 1338 bool pspolling; 1339 bool offchannel_ps_enabled; 1340 /* 1341 * PS can only be enabled when we have exactly one managed 1342 * interface (and monitors) in PS, this then points there. 1343 */ 1344 struct ieee80211_sub_if_data *ps_sdata; 1345 struct work_struct dynamic_ps_enable_work; 1346 struct work_struct dynamic_ps_disable_work; 1347 struct timer_list dynamic_ps_timer; 1348 struct notifier_block ifa_notifier; 1349 struct notifier_block ifa6_notifier; 1350 1351 /* 1352 * The dynamic ps timeout configured from user space via WEXT - 1353 * this will override whatever chosen by mac80211 internally. 1354 */ 1355 int dynamic_ps_forced_timeout; 1356 1357 int user_power_level; /* in dBm, for all interfaces */ 1358 1359 enum ieee80211_smps_mode smps_mode; 1360 1361 struct work_struct restart_work; 1362 1363 #ifdef CONFIG_MAC80211_DEBUGFS 1364 struct local_debugfsdentries { 1365 struct dentry *rcdir; 1366 struct dentry *keys; 1367 } debugfs; 1368 #endif 1369 1370 /* 1371 * Remain-on-channel support 1372 */ 1373 struct delayed_work roc_work; 1374 struct list_head roc_list; 1375 struct work_struct hw_roc_start, hw_roc_done; 1376 unsigned long hw_roc_start_time; 1377 u64 roc_cookie_counter; 1378 1379 struct idr ack_status_frames; 1380 spinlock_t ack_status_lock; 1381 1382 struct ieee80211_sub_if_data __rcu *p2p_sdata; 1383 1384 /* virtual monitor interface */ 1385 struct ieee80211_sub_if_data __rcu *monitor_sdata; 1386 struct cfg80211_chan_def monitor_chandef; 1387 1388 /* extended capabilities provided by mac80211 */ 1389 u8 ext_capa[8]; 1390 1391 /* TDLS channel switch */ 1392 struct work_struct tdls_chsw_work; 1393 struct sk_buff_head skb_queue_tdls_chsw; 1394 }; 1395 1396 static inline struct ieee80211_sub_if_data * 1397 IEEE80211_DEV_TO_SUB_IF(struct net_device *dev) 1398 { 1399 return netdev_priv(dev); 1400 } 1401 1402 static inline struct ieee80211_sub_if_data * 1403 IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev) 1404 { 1405 return container_of(wdev, struct ieee80211_sub_if_data, wdev); 1406 } 1407 1408 static inline struct ieee80211_supported_band * 1409 ieee80211_get_sband(struct ieee80211_sub_if_data *sdata) 1410 { 1411 struct ieee80211_local *local = sdata->local; 1412 struct ieee80211_chanctx_conf *chanctx_conf; 1413 enum nl80211_band band; 1414 1415 rcu_read_lock(); 1416 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1417 1418 if (WARN_ON(!chanctx_conf)) { 1419 rcu_read_unlock(); 1420 return NULL; 1421 } 1422 1423 band = chanctx_conf->def.chan->band; 1424 rcu_read_unlock(); 1425 1426 return local->hw.wiphy->bands[band]; 1427 } 1428 1429 /* this struct holds the value parsing from channel switch IE */ 1430 struct ieee80211_csa_ie { 1431 struct cfg80211_chan_def chandef; 1432 u8 mode; 1433 u8 count; 1434 u8 ttl; 1435 u16 pre_value; 1436 u16 reason_code; 1437 }; 1438 1439 /* Parsed Information Elements */ 1440 struct ieee802_11_elems { 1441 const u8 *ie_start; 1442 size_t total_len; 1443 1444 /* pointers to IEs */ 1445 const struct ieee80211_tdls_lnkie *lnk_id; 1446 const struct ieee80211_ch_switch_timing *ch_sw_timing; 1447 const u8 *ext_capab; 1448 const u8 *ssid; 1449 const u8 *supp_rates; 1450 const u8 *ds_params; 1451 const struct ieee80211_tim_ie *tim; 1452 const u8 *challenge; 1453 const u8 *rsn; 1454 const u8 *erp_info; 1455 const u8 *ext_supp_rates; 1456 const u8 *wmm_info; 1457 const u8 *wmm_param; 1458 const struct ieee80211_ht_cap *ht_cap_elem; 1459 const struct ieee80211_ht_operation *ht_operation; 1460 const struct ieee80211_vht_cap *vht_cap_elem; 1461 const struct ieee80211_vht_operation *vht_operation; 1462 const struct ieee80211_meshconf_ie *mesh_config; 1463 const u8 *he_cap; 1464 const struct ieee80211_he_operation *he_operation; 1465 const struct ieee80211_mu_edca_param_set *mu_edca_param_set; 1466 const u8 *uora_element; 1467 const u8 *mesh_id; 1468 const u8 *peering; 1469 const __le16 *awake_window; 1470 const u8 *preq; 1471 const u8 *prep; 1472 const u8 *perr; 1473 const struct ieee80211_rann_ie *rann; 1474 const struct ieee80211_channel_sw_ie *ch_switch_ie; 1475 const struct ieee80211_ext_chansw_ie *ext_chansw_ie; 1476 const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie; 1477 const u8 *country_elem; 1478 const u8 *pwr_constr_elem; 1479 const u8 *cisco_dtpc_elem; 1480 const struct ieee80211_timeout_interval_ie *timeout_int; 1481 const u8 *opmode_notif; 1482 const struct ieee80211_sec_chan_offs_ie *sec_chan_offs; 1483 struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie; 1484 const struct ieee80211_bss_max_idle_period_ie *max_idle_period_ie; 1485 1486 /* length of them, respectively */ 1487 u8 ext_capab_len; 1488 u8 ssid_len; 1489 u8 supp_rates_len; 1490 u8 tim_len; 1491 u8 challenge_len; 1492 u8 rsn_len; 1493 u8 ext_supp_rates_len; 1494 u8 wmm_info_len; 1495 u8 wmm_param_len; 1496 u8 he_cap_len; 1497 u8 mesh_id_len; 1498 u8 peering_len; 1499 u8 preq_len; 1500 u8 prep_len; 1501 u8 perr_len; 1502 u8 country_elem_len; 1503 1504 /* whether a parse error occurred while retrieving these elements */ 1505 bool parse_error; 1506 }; 1507 1508 static inline struct ieee80211_local *hw_to_local( 1509 struct ieee80211_hw *hw) 1510 { 1511 return container_of(hw, struct ieee80211_local, hw); 1512 } 1513 1514 static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq) 1515 { 1516 return container_of(txq, struct txq_info, txq); 1517 } 1518 1519 static inline bool txq_has_queue(struct ieee80211_txq *txq) 1520 { 1521 struct txq_info *txqi = to_txq_info(txq); 1522 1523 return !(skb_queue_empty(&txqi->frags) && !txqi->tin.backlog_packets); 1524 } 1525 1526 static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr) 1527 { 1528 return ether_addr_equal(raddr, addr) || 1529 is_broadcast_ether_addr(raddr); 1530 } 1531 1532 static inline bool 1533 ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status) 1534 { 1535 WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START && 1536 status->flag & RX_FLAG_MACTIME_END); 1537 if (status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END)) 1538 return true; 1539 /* can't handle non-legacy preamble yet */ 1540 if (status->flag & RX_FLAG_MACTIME_PLCP_START && 1541 status->encoding == RX_ENC_LEGACY) 1542 return true; 1543 return false; 1544 } 1545 1546 void ieee80211_vif_inc_num_mcast(struct ieee80211_sub_if_data *sdata); 1547 void ieee80211_vif_dec_num_mcast(struct ieee80211_sub_if_data *sdata); 1548 1549 /* This function returns the number of multicast stations connected to this 1550 * interface. It returns -1 if that number is not tracked, that is for netdevs 1551 * not in AP or AP_VLAN mode or when using 4addr. 1552 */ 1553 static inline int 1554 ieee80211_vif_get_num_mcast_if(struct ieee80211_sub_if_data *sdata) 1555 { 1556 if (sdata->vif.type == NL80211_IFTYPE_AP) 1557 return atomic_read(&sdata->u.ap.num_mcast_sta); 1558 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->u.vlan.sta) 1559 return atomic_read(&sdata->u.vlan.num_mcast_sta); 1560 return -1; 1561 } 1562 1563 u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, 1564 struct ieee80211_rx_status *status, 1565 unsigned int mpdu_len, 1566 unsigned int mpdu_offset); 1567 int ieee80211_hw_config(struct ieee80211_local *local, u32 changed); 1568 void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx); 1569 void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata, 1570 u32 changed); 1571 void ieee80211_configure_filter(struct ieee80211_local *local); 1572 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata); 1573 1574 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local); 1575 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb, 1576 u64 *cookie, gfp_t gfp); 1577 1578 void ieee80211_check_fast_rx(struct sta_info *sta); 1579 void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1580 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata); 1581 void ieee80211_clear_fast_rx(struct sta_info *sta); 1582 1583 /* STA code */ 1584 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata); 1585 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 1586 struct cfg80211_auth_request *req); 1587 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 1588 struct cfg80211_assoc_request *req); 1589 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 1590 struct cfg80211_deauth_request *req); 1591 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 1592 struct cfg80211_disassoc_request *req); 1593 void ieee80211_send_pspoll(struct ieee80211_local *local, 1594 struct ieee80211_sub_if_data *sdata); 1595 void ieee80211_recalc_ps(struct ieee80211_local *local); 1596 void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata); 1597 int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata); 1598 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata); 1599 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1600 struct sk_buff *skb); 1601 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); 1602 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); 1603 void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); 1604 void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata, 1605 __le16 fc, bool acked); 1606 void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata); 1607 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata); 1608 void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata); 1609 1610 /* IBSS code */ 1611 void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); 1612 void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata); 1613 void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1614 const u8 *bssid, const u8 *addr, u32 supp_rates); 1615 int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, 1616 struct cfg80211_ibss_params *params); 1617 int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata); 1618 void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata); 1619 void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1620 struct sk_buff *skb); 1621 int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata, 1622 struct cfg80211_csa_settings *csa_settings); 1623 int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata); 1624 void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata); 1625 1626 /* OCB code */ 1627 void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata); 1628 void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata, 1629 const u8 *bssid, const u8 *addr, u32 supp_rates); 1630 void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata); 1631 int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata, 1632 struct ocb_setup *setup); 1633 int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata); 1634 1635 /* mesh code */ 1636 void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata); 1637 void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1638 struct sk_buff *skb); 1639 int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata, 1640 struct cfg80211_csa_settings *csa_settings); 1641 int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata); 1642 1643 /* scan/BSS handling */ 1644 void ieee80211_scan_work(struct work_struct *work); 1645 int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, 1646 const u8 *ssid, u8 ssid_len, 1647 struct ieee80211_channel **channels, 1648 unsigned int n_channels, 1649 enum nl80211_bss_scan_width scan_width); 1650 int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata, 1651 struct cfg80211_scan_request *req); 1652 void ieee80211_scan_cancel(struct ieee80211_local *local); 1653 void ieee80211_run_deferred_scan(struct ieee80211_local *local); 1654 void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb); 1655 1656 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local); 1657 struct ieee80211_bss * 1658 ieee80211_bss_info_update(struct ieee80211_local *local, 1659 struct ieee80211_rx_status *rx_status, 1660 struct ieee80211_mgmt *mgmt, 1661 size_t len, 1662 struct ieee802_11_elems *elems, 1663 struct ieee80211_channel *channel); 1664 void ieee80211_rx_bss_put(struct ieee80211_local *local, 1665 struct ieee80211_bss *bss); 1666 1667 /* scheduled scan handling */ 1668 int 1669 __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1670 struct cfg80211_sched_scan_request *req); 1671 int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, 1672 struct cfg80211_sched_scan_request *req); 1673 int ieee80211_request_sched_scan_stop(struct ieee80211_local *local); 1674 void ieee80211_sched_scan_end(struct ieee80211_local *local); 1675 void ieee80211_sched_scan_stopped_work(struct work_struct *work); 1676 1677 /* off-channel/mgmt-tx */ 1678 void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local); 1679 void ieee80211_offchannel_return(struct ieee80211_local *local); 1680 void ieee80211_roc_setup(struct ieee80211_local *local); 1681 void ieee80211_start_next_roc(struct ieee80211_local *local); 1682 void ieee80211_roc_purge(struct ieee80211_local *local, 1683 struct ieee80211_sub_if_data *sdata); 1684 int ieee80211_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, 1685 struct ieee80211_channel *chan, 1686 unsigned int duration, u64 *cookie); 1687 int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, 1688 struct wireless_dev *wdev, u64 cookie); 1689 int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, 1690 struct cfg80211_mgmt_tx_params *params, u64 *cookie); 1691 int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, 1692 struct wireless_dev *wdev, u64 cookie); 1693 1694 /* channel switch handling */ 1695 void ieee80211_csa_finalize_work(struct work_struct *work); 1696 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, 1697 struct cfg80211_csa_settings *params); 1698 1699 /* interface handling */ 1700 int ieee80211_iface_init(void); 1701 void ieee80211_iface_exit(void); 1702 int ieee80211_if_add(struct ieee80211_local *local, const char *name, 1703 unsigned char name_assign_type, 1704 struct wireless_dev **new_wdev, enum nl80211_iftype type, 1705 struct vif_params *params); 1706 int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata, 1707 enum nl80211_iftype type); 1708 void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata); 1709 void ieee80211_remove_interfaces(struct ieee80211_local *local); 1710 u32 ieee80211_idle_off(struct ieee80211_local *local); 1711 void ieee80211_recalc_idle(struct ieee80211_local *local); 1712 void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata, 1713 const int offset); 1714 int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up); 1715 void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata); 1716 int ieee80211_add_virtual_monitor(struct ieee80211_local *local); 1717 void ieee80211_del_virtual_monitor(struct ieee80211_local *local); 1718 1719 bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata); 1720 void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata, 1721 bool update_bss); 1722 1723 static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata) 1724 { 1725 return test_bit(SDATA_STATE_RUNNING, &sdata->state); 1726 } 1727 1728 /* tx handling */ 1729 void ieee80211_clear_tx_pending(struct ieee80211_local *local); 1730 void ieee80211_tx_pending(unsigned long data); 1731 netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb, 1732 struct net_device *dev); 1733 netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, 1734 struct net_device *dev); 1735 void __ieee80211_subif_start_xmit(struct sk_buff *skb, 1736 struct net_device *dev, 1737 u32 info_flags); 1738 void ieee80211_purge_tx_queue(struct ieee80211_hw *hw, 1739 struct sk_buff_head *skbs); 1740 struct sk_buff * 1741 ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata, 1742 struct sk_buff *skb, u32 info_flags); 1743 void ieee80211_tx_monitor(struct ieee80211_local *local, struct sk_buff *skb, 1744 struct ieee80211_supported_band *sband, 1745 int retry_count, int shift, bool send_to_cooked); 1746 1747 void ieee80211_check_fast_xmit(struct sta_info *sta); 1748 void ieee80211_check_fast_xmit_all(struct ieee80211_local *local); 1749 void ieee80211_check_fast_xmit_iface(struct ieee80211_sub_if_data *sdata); 1750 void ieee80211_clear_fast_xmit(struct sta_info *sta); 1751 int ieee80211_tx_control_port(struct wiphy *wiphy, struct net_device *dev, 1752 const u8 *buf, size_t len, 1753 const u8 *dest, __be16 proto, bool unencrypted); 1754 1755 /* HT */ 1756 void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, 1757 struct ieee80211_sta_ht_cap *ht_cap); 1758 bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 1759 struct ieee80211_supported_band *sband, 1760 const struct ieee80211_ht_cap *ht_cap_ie, 1761 struct sta_info *sta); 1762 void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, 1763 const u8 *da, u16 tid, 1764 u16 initiator, u16 reason_code); 1765 int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, 1766 enum ieee80211_smps_mode smps, const u8 *da, 1767 const u8 *bssid); 1768 void ieee80211_request_smps_ap_work(struct work_struct *work); 1769 void ieee80211_request_smps_mgd_work(struct work_struct *work); 1770 bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old, 1771 enum ieee80211_smps_mode smps_mode_new); 1772 1773 void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1774 u16 initiator, u16 reason, bool stop); 1775 void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 1776 u16 initiator, u16 reason, bool stop); 1777 void ___ieee80211_start_rx_ba_session(struct sta_info *sta, 1778 u8 dialog_token, u16 timeout, 1779 u16 start_seq_num, u16 ba_policy, u16 tid, 1780 u16 buf_size, bool tx, bool auto_seq); 1781 void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, 1782 enum ieee80211_agg_stop_reason reason); 1783 void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 1784 struct sta_info *sta, 1785 struct ieee80211_mgmt *mgmt, size_t len); 1786 void ieee80211_process_addba_resp(struct ieee80211_local *local, 1787 struct sta_info *sta, 1788 struct ieee80211_mgmt *mgmt, 1789 size_t len); 1790 void ieee80211_process_addba_request(struct ieee80211_local *local, 1791 struct sta_info *sta, 1792 struct ieee80211_mgmt *mgmt, 1793 size_t len); 1794 1795 int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1796 enum ieee80211_agg_stop_reason reason); 1797 int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 1798 enum ieee80211_agg_stop_reason reason); 1799 void ieee80211_start_tx_ba_cb(struct sta_info *sta, int tid, 1800 struct tid_ampdu_tx *tid_tx); 1801 void ieee80211_stop_tx_ba_cb(struct sta_info *sta, int tid, 1802 struct tid_ampdu_tx *tid_tx); 1803 void ieee80211_ba_session_work(struct work_struct *work); 1804 void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); 1805 void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); 1806 1807 u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); 1808 enum nl80211_smps_mode 1809 ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps); 1810 1811 /* VHT */ 1812 void 1813 ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata, 1814 struct ieee80211_supported_band *sband, 1815 const struct ieee80211_vht_cap *vht_cap_ie, 1816 struct sta_info *sta); 1817 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta); 1818 enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta); 1819 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1820 enum ieee80211_sta_rx_bandwidth 1821 ieee80211_chan_width_to_rx_bw(enum nl80211_chan_width width); 1822 enum nl80211_chan_width ieee80211_sta_cap_chan_bw(struct sta_info *sta); 1823 void ieee80211_sta_set_rx_nss(struct sta_info *sta); 1824 void ieee80211_process_mu_groups(struct ieee80211_sub_if_data *sdata, 1825 struct ieee80211_mgmt *mgmt); 1826 u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1827 struct sta_info *sta, u8 opmode, 1828 enum nl80211_band band); 1829 void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata, 1830 struct sta_info *sta, u8 opmode, 1831 enum nl80211_band band); 1832 void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata, 1833 struct ieee80211_sta_vht_cap *vht_cap); 1834 void ieee80211_get_vht_mask_from_cap(__le16 vht_cap, 1835 u16 vht_mask[NL80211_VHT_NSS_MAX]); 1836 enum nl80211_chan_width 1837 ieee80211_sta_rx_bw_to_chan_width(struct sta_info *sta); 1838 1839 /* HE */ 1840 void 1841 ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata, 1842 struct ieee80211_supported_band *sband, 1843 const u8 *he_cap_ie, u8 he_cap_len, 1844 struct sta_info *sta); 1845 1846 /* Spectrum management */ 1847 void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, 1848 struct ieee80211_mgmt *mgmt, 1849 size_t len); 1850 /** 1851 * ieee80211_parse_ch_switch_ie - parses channel switch IEs 1852 * @sdata: the sdata of the interface which has received the frame 1853 * @elems: parsed 802.11 elements received with the frame 1854 * @current_band: indicates the current band 1855 * @sta_flags: contains information about own capabilities and restrictions 1856 * to decide which channel switch announcements can be accepted. Only the 1857 * following subset of &enum ieee80211_sta_flags are evaluated: 1858 * %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT, 1859 * %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ, 1860 * %IEEE80211_STA_DISABLE_160MHZ. 1861 * @bssid: the currently connected bssid (for reporting) 1862 * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl. 1863 All of them will be filled with if success only. 1864 * Return: 0 on success, <0 on error and >0 if there is nothing to parse. 1865 */ 1866 int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata, 1867 struct ieee802_11_elems *elems, 1868 enum nl80211_band current_band, 1869 u32 sta_flags, u8 *bssid, 1870 struct ieee80211_csa_ie *csa_ie); 1871 1872 /* Suspend/resume and hw reconfiguration */ 1873 int ieee80211_reconfig(struct ieee80211_local *local); 1874 void ieee80211_stop_device(struct ieee80211_local *local); 1875 1876 int __ieee80211_suspend(struct ieee80211_hw *hw, 1877 struct cfg80211_wowlan *wowlan); 1878 1879 static inline int __ieee80211_resume(struct ieee80211_hw *hw) 1880 { 1881 struct ieee80211_local *local = hw_to_local(hw); 1882 1883 WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) && 1884 !test_bit(SCAN_COMPLETED, &local->scanning), 1885 "%s: resume with hardware scan still in progress\n", 1886 wiphy_name(hw->wiphy)); 1887 1888 return ieee80211_reconfig(hw_to_local(hw)); 1889 } 1890 1891 /* utility functions/constants */ 1892 extern const void *const mac80211_wiphy_privid; /* for wiphy privid */ 1893 int ieee80211_frame_duration(enum nl80211_band band, size_t len, 1894 int rate, int erp, int short_preamble, 1895 int shift); 1896 void ieee80211_regulatory_limit_wmm_params(struct ieee80211_sub_if_data *sdata, 1897 struct ieee80211_tx_queue_params *qparam, 1898 int ac); 1899 void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 1900 bool bss_notify, bool enable_qos); 1901 void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 1902 struct sta_info *sta, struct sk_buff *skb, 1903 u32 txdata_flags); 1904 1905 void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1906 struct sk_buff *skb, int tid, 1907 enum nl80211_band band, u32 txdata_flags); 1908 1909 static inline void 1910 ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata, 1911 struct sk_buff *skb, int tid, 1912 enum nl80211_band band, u32 txdata_flags) 1913 { 1914 rcu_read_lock(); 1915 __ieee80211_tx_skb_tid_band(sdata, skb, tid, band, txdata_flags); 1916 rcu_read_unlock(); 1917 } 1918 1919 static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata, 1920 struct sk_buff *skb, int tid) 1921 { 1922 struct ieee80211_chanctx_conf *chanctx_conf; 1923 1924 rcu_read_lock(); 1925 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); 1926 if (WARN_ON(!chanctx_conf)) { 1927 rcu_read_unlock(); 1928 kfree_skb(skb); 1929 return; 1930 } 1931 1932 __ieee80211_tx_skb_tid_band(sdata, skb, tid, 1933 chanctx_conf->def.chan->band, 0); 1934 rcu_read_unlock(); 1935 } 1936 1937 static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, 1938 struct sk_buff *skb) 1939 { 1940 /* Send all internal mgmt frames on VO. Accordingly set TID to 7. */ 1941 ieee80211_tx_skb_tid(sdata, skb, 7); 1942 } 1943 1944 u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action, 1945 struct ieee802_11_elems *elems, 1946 u64 filter, u32 crc); 1947 static inline void ieee802_11_parse_elems(const u8 *start, size_t len, 1948 bool action, 1949 struct ieee802_11_elems *elems) 1950 { 1951 ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0); 1952 } 1953 1954 1955 extern const int ieee802_1d_to_ac[8]; 1956 1957 static inline int ieee80211_ac_from_tid(int tid) 1958 { 1959 return ieee802_1d_to_ac[tid & 7]; 1960 } 1961 1962 void ieee80211_dynamic_ps_enable_work(struct work_struct *work); 1963 void ieee80211_dynamic_ps_disable_work(struct work_struct *work); 1964 void ieee80211_dynamic_ps_timer(struct timer_list *t); 1965 void ieee80211_send_nullfunc(struct ieee80211_local *local, 1966 struct ieee80211_sub_if_data *sdata, 1967 bool powersave); 1968 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1969 struct ieee80211_hdr *hdr); 1970 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1971 struct ieee80211_hdr *hdr, bool ack, u16 tx_time); 1972 1973 void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw, 1974 unsigned long queues, 1975 enum queue_stop_reason reason, 1976 bool refcounted); 1977 void ieee80211_stop_vif_queues(struct ieee80211_local *local, 1978 struct ieee80211_sub_if_data *sdata, 1979 enum queue_stop_reason reason); 1980 void ieee80211_wake_vif_queues(struct ieee80211_local *local, 1981 struct ieee80211_sub_if_data *sdata, 1982 enum queue_stop_reason reason); 1983 void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw, 1984 unsigned long queues, 1985 enum queue_stop_reason reason, 1986 bool refcounted); 1987 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue, 1988 enum queue_stop_reason reason, 1989 bool refcounted); 1990 void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue, 1991 enum queue_stop_reason reason, 1992 bool refcounted); 1993 void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue); 1994 void ieee80211_add_pending_skb(struct ieee80211_local *local, 1995 struct sk_buff *skb); 1996 void ieee80211_add_pending_skbs(struct ieee80211_local *local, 1997 struct sk_buff_head *skbs); 1998 void ieee80211_flush_queues(struct ieee80211_local *local, 1999 struct ieee80211_sub_if_data *sdata, bool drop); 2000 void __ieee80211_flush_queues(struct ieee80211_local *local, 2001 struct ieee80211_sub_if_data *sdata, 2002 unsigned int queues, bool drop); 2003 2004 static inline bool ieee80211_can_run_worker(struct ieee80211_local *local) 2005 { 2006 /* 2007 * If quiescing is set, we are racing with __ieee80211_suspend. 2008 * __ieee80211_suspend flushes the workers after setting quiescing, 2009 * and we check quiescing / suspended before enqueing new workers. 2010 * We should abort the worker to avoid the races below. 2011 */ 2012 if (local->quiescing) 2013 return false; 2014 2015 /* 2016 * We might already be suspended if the following scenario occurs: 2017 * __ieee80211_suspend Control path 2018 * 2019 * if (local->quiescing) 2020 * return; 2021 * local->quiescing = true; 2022 * flush_workqueue(); 2023 * queue_work(...); 2024 * local->suspended = true; 2025 * local->quiescing = false; 2026 * worker starts running... 2027 */ 2028 if (local->suspended) 2029 return false; 2030 2031 return true; 2032 } 2033 2034 int ieee80211_txq_setup_flows(struct ieee80211_local *local); 2035 void ieee80211_txq_set_params(struct ieee80211_local *local); 2036 void ieee80211_txq_teardown_flows(struct ieee80211_local *local); 2037 void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata, 2038 struct sta_info *sta, 2039 struct txq_info *txq, int tid); 2040 void ieee80211_txq_purge(struct ieee80211_local *local, 2041 struct txq_info *txqi); 2042 void ieee80211_txq_remove_vlan(struct ieee80211_local *local, 2043 struct ieee80211_sub_if_data *sdata); 2044 void ieee80211_fill_txq_stats(struct cfg80211_txq_stats *txqstats, 2045 struct txq_info *txqi); 2046 void ieee80211_wake_txqs(unsigned long data); 2047 void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata, 2048 u16 transaction, u16 auth_alg, u16 status, 2049 const u8 *extra, size_t extra_len, const u8 *bssid, 2050 const u8 *da, const u8 *key, u8 key_len, u8 key_idx, 2051 u32 tx_flags); 2052 void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 2053 const u8 *bssid, u16 stype, u16 reason, 2054 bool send_frame, u8 *frame_buf); 2055 2056 enum { 2057 IEEE80211_PROBE_FLAG_DIRECTED = BIT(0), 2058 IEEE80211_PROBE_FLAG_MIN_CONTENT = BIT(1), 2059 IEEE80211_PROBE_FLAG_RANDOM_SN = BIT(2), 2060 }; 2061 2062 int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer, 2063 size_t buffer_len, 2064 struct ieee80211_scan_ies *ie_desc, 2065 const u8 *ie, size_t ie_len, 2066 u8 bands_used, u32 *rate_masks, 2067 struct cfg80211_chan_def *chandef, 2068 u32 flags); 2069 struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata, 2070 const u8 *src, const u8 *dst, 2071 u32 ratemask, 2072 struct ieee80211_channel *chan, 2073 const u8 *ssid, size_t ssid_len, 2074 const u8 *ie, size_t ie_len, 2075 u32 flags); 2076 u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata, 2077 struct ieee802_11_elems *elems, 2078 enum nl80211_band band, u32 *basic_rates); 2079 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata, 2080 enum ieee80211_smps_mode smps_mode); 2081 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata, 2082 enum ieee80211_smps_mode smps_mode); 2083 void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); 2084 void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata); 2085 2086 size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset); 2087 u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2088 u16 cap); 2089 u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap, 2090 const struct cfg80211_chan_def *chandef, 2091 u16 prot_mode, bool rifs_mode); 2092 void ieee80211_ie_build_wide_bw_cs(u8 *pos, 2093 const struct cfg80211_chan_def *chandef); 2094 u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2095 u32 cap); 2096 u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap, 2097 const struct cfg80211_chan_def *chandef); 2098 u8 *ieee80211_ie_build_he_cap(u8 *pos, 2099 const struct ieee80211_sta_he_cap *he_cap, 2100 u8 *end); 2101 int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef, 2102 const struct ieee80211_supported_band *sband, 2103 const u8 *srates, int srates_len, u32 *rates); 2104 int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata, 2105 struct sk_buff *skb, bool need_basic, 2106 enum nl80211_band band); 2107 int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata, 2108 struct sk_buff *skb, bool need_basic, 2109 enum nl80211_band band); 2110 u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo); 2111 2112 /* channel management */ 2113 bool ieee80211_chandef_ht_oper(const struct ieee80211_ht_operation *ht_oper, 2114 struct cfg80211_chan_def *chandef); 2115 bool ieee80211_chandef_vht_oper(struct ieee80211_hw *hw, 2116 const struct ieee80211_vht_operation *oper, 2117 const struct ieee80211_ht_operation *htop, 2118 struct cfg80211_chan_def *chandef); 2119 u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c); 2120 2121 int __must_check 2122 ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, 2123 const struct cfg80211_chan_def *chandef, 2124 enum ieee80211_chanctx_mode mode); 2125 int __must_check 2126 ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata, 2127 const struct cfg80211_chan_def *chandef, 2128 enum ieee80211_chanctx_mode mode, 2129 bool radar_required); 2130 int __must_check 2131 ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata); 2132 int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata); 2133 2134 int __must_check 2135 ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata, 2136 const struct cfg80211_chan_def *chandef, 2137 u32 *changed); 2138 void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); 2139 void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata); 2140 void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata, 2141 bool clear); 2142 int ieee80211_chanctx_refcount(struct ieee80211_local *local, 2143 struct ieee80211_chanctx *ctx); 2144 2145 void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, 2146 struct ieee80211_chanctx *chanctx); 2147 void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, 2148 struct ieee80211_chanctx *ctx); 2149 bool ieee80211_is_radar_required(struct ieee80211_local *local); 2150 2151 void ieee80211_dfs_cac_timer(unsigned long data); 2152 void ieee80211_dfs_cac_timer_work(struct work_struct *work); 2153 void ieee80211_dfs_cac_cancel(struct ieee80211_local *local); 2154 void ieee80211_dfs_radar_detected_work(struct work_struct *work); 2155 int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, 2156 struct cfg80211_csa_settings *csa_settings); 2157 2158 bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs); 2159 bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n); 2160 const struct ieee80211_cipher_scheme * 2161 ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, 2162 enum nl80211_iftype iftype); 2163 int ieee80211_cs_headroom(struct ieee80211_local *local, 2164 struct cfg80211_crypto_settings *crypto, 2165 enum nl80211_iftype iftype); 2166 void ieee80211_recalc_dtim(struct ieee80211_local *local, 2167 struct ieee80211_sub_if_data *sdata); 2168 int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata, 2169 const struct cfg80211_chan_def *chandef, 2170 enum ieee80211_chanctx_mode chanmode, 2171 u8 radar_detect); 2172 int ieee80211_max_num_channels(struct ieee80211_local *local); 2173 enum nl80211_chan_width ieee80211_get_sta_bw(struct ieee80211_sta *sta); 2174 void ieee80211_recalc_chanctx_chantype(struct ieee80211_local *local, 2175 struct ieee80211_chanctx *ctx); 2176 2177 /* TDLS */ 2178 int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, 2179 const u8 *peer, u8 action_code, u8 dialog_token, 2180 u16 status_code, u32 peer_capability, 2181 bool initiator, const u8 *extra_ies, 2182 size_t extra_ies_len); 2183 int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, 2184 const u8 *peer, enum nl80211_tdls_operation oper); 2185 void ieee80211_tdls_peer_del_work(struct work_struct *wk); 2186 int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev, 2187 const u8 *addr, u8 oper_class, 2188 struct cfg80211_chan_def *chandef); 2189 void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy, 2190 struct net_device *dev, 2191 const u8 *addr); 2192 void ieee80211_teardown_tdls_peers(struct ieee80211_sub_if_data *sdata); 2193 void ieee80211_tdls_chsw_work(struct work_struct *wk); 2194 2195 extern const struct ethtool_ops ieee80211_ethtool_ops; 2196 2197 #ifdef CONFIG_MAC80211_NOINLINE 2198 #define debug_noinline noinline 2199 #else 2200 #define debug_noinline 2201 #endif 2202 2203 #endif /* IEEE80211_I_H */ 2204